<div class="d-flex justify-content-center Body">
    <div class="d-flex align-items-center login-content">
        <form class="Form" [formGroup]="myForm" (ngSubmit)="onSubmit(myForm.value)">
            <h3 class="d-flex justify-content-center Body">用户登录</h3>
            <div class="form-group">
                <label for="userName">用户名</label>
                <input type="text" class="form-control" id="userName" aria-describedby="输入用户名" name="userName" formControlName="userName" [ngClass]="{'is-invalid':userName.invalid,'is-valid':userName.valid}">
                <div class="valid-feedback">
                    用户名格式正确！
                </div>
                <div class="invalid-feedback">
                    <span *ngIf="userName.hasError('invalidUser')">用户名必须以zime开头!</span>
                    <span *ngIf="!userName.hasError('invalidUser') && !userName.hasError('minLength') ">用户名长度不得小于7位</span>
                </div>
            </div>
            <div class="form-group">
                <label for="password">密码</label>
                <input type="password" class="form-control" id="password" name="password" formControlName="password" [ngClass]="{'is-invalid':password.invalid,'is-valid':password.valid}">
                <div class="valid-feedback">
                    密码正确！
                </div>
                <div class="invalid-feedback">
                    密码长度不得小于6位!
                </div>
            </div>
            <button type="submit" class="btn btn-primary btn-block">提交</button>
        </form>
    </div>
</div>